Bacitracin, Bacillus subtilis, and Eimeria spp. challenge exacerbates woody breast incidence and severity in broilers

ABSTRACT: Woody breast (WB) is a myopathy that is related to the increasing growth rate. Understanding the influence of management factors on WB formation and development is important to minimize WB. This study was conducted to define how management factors affect broiler growth performance, process...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Linan Jia, Xue Zhang, Xiaofei Li, Wes Schilling, E. David Peebles, Aaron S. Kiess, Wei Zhai, Li Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	antibiotics probiotics coccidiosis myopathy gut health Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/987be5cb52504c9395796b26d026b8ce
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:987be5cb52504c9395796b26d026b8ce
record_format	dspace
spelling	oai:doaj.org-article:987be5cb52504c9395796b26d026b8ce2021-11-16T04:09:00ZBacitracin, Bacillus subtilis, and Eimeria spp. challenge exacerbates woody breast incidence and severity in broilers0032-579110.1016/j.psj.2021.101512https://doaj.org/article/987be5cb52504c9395796b26d026b8ce2022-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0032579121005344https://doaj.org/toc/0032-5791ABSTRACT: Woody breast (WB) is a myopathy that is related to the increasing growth rate. Understanding the influence of management factors on WB formation and development is important to minimize WB. This study was conducted to define how management factors affect broiler growth performance, processing yield, and WB incidence. Ross × Ross 708 chicks were randomly assigned to a 3 (diet) × 2 (cocci challenge) × 2 (sex) factorial arrangement of treatments. The 3 dietary treatments were: control diet (corn-soybean meal basal diet), antibiotic diet (basal diet + 6.075 mg bacitracin /kg feed), and probiotic diet (basal diet + 2.2 × 108 CFU Bacillus subtilis PB6/kg feed). Birds in cocci challenge treatments received 20 × live cocci vaccine on d 14. The hardness of breast muscle in live birds was determined by palpation and grouped into Normal, Slight, Moderate, and Severe categories. Across diet and sex treatments, the cocci challenge resulted in decreases in body weight (BW) on d 29 and 35 (P < 0.0001 and = 0.032) in body weight gain (BWG) from d 14 to 29 (P < 0.0001). However, an increase of BW occurred on d 35 (P = 0.032) and an increase of BWG occurred from d 29 to 35 and d 35 to 43 (P = 0.0001 and 0.002), and the cocci challenge increased WB incidence on d 29 (P = 0.043) and d 43 (P = 0.013). Across challenge and sex treatments, birds fed the antibiotic diet exhibited a higher growth rate (GR) than those fed the control or probiotic diet from d 0 to 14 (P = 0.016), but not after d 14 (P > 0.05). Across sex, the antibiotic and probiotic diets increased WB incidence for those birds that did not receive a cocci challenge on d 43 (P = 0.040). Across challenge and diet treatments, males exhibited a higher BW, BWG, and GR throughout all growth phases, and males showed a higher WB incidence on d 29, 35, and 43 (P = 0.002, P < 0.0001, and P = 0.0002, respectively). In conclusion, bacitracin and Eimeria spp. increased WB incidence, BW, and GR. However, Bacillus subtilis increased WB incidence in male broilers without affecting BW and GR.Linan JiaXue ZhangXiaofei LiWes SchillingE. David PeeblesAaron S. KiessWei ZhaiLi ZhangElsevierarticleantibioticsprobioticscoccidiosismyopathygut healthAnimal cultureSF1-1100ENPoultry Science, Vol 101, Iss 1, Pp 101512- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	antibiotics probiotics coccidiosis myopathy gut health Animal culture SF1-1100
spellingShingle	antibiotics probiotics coccidiosis myopathy gut health Animal culture SF1-1100 Linan Jia Xue Zhang Xiaofei Li Wes Schilling E. David Peebles Aaron S. Kiess Wei Zhai Li Zhang Bacitracin, Bacillus subtilis, and Eimeria spp. challenge exacerbates woody breast incidence and severity in broilers
description	ABSTRACT: Woody breast (WB) is a myopathy that is related to the increasing growth rate. Understanding the influence of management factors on WB formation and development is important to minimize WB. This study was conducted to define how management factors affect broiler growth performance, processing yield, and WB incidence. Ross × Ross 708 chicks were randomly assigned to a 3 (diet) × 2 (cocci challenge) × 2 (sex) factorial arrangement of treatments. The 3 dietary treatments were: control diet (corn-soybean meal basal diet), antibiotic diet (basal diet + 6.075 mg bacitracin /kg feed), and probiotic diet (basal diet + 2.2 × 108 CFU Bacillus subtilis PB6/kg feed). Birds in cocci challenge treatments received 20 × live cocci vaccine on d 14. The hardness of breast muscle in live birds was determined by palpation and grouped into Normal, Slight, Moderate, and Severe categories. Across diet and sex treatments, the cocci challenge resulted in decreases in body weight (BW) on d 29 and 35 (P < 0.0001 and = 0.032) in body weight gain (BWG) from d 14 to 29 (P < 0.0001). However, an increase of BW occurred on d 35 (P = 0.032) and an increase of BWG occurred from d 29 to 35 and d 35 to 43 (P = 0.0001 and 0.002), and the cocci challenge increased WB incidence on d 29 (P = 0.043) and d 43 (P = 0.013). Across challenge and sex treatments, birds fed the antibiotic diet exhibited a higher growth rate (GR) than those fed the control or probiotic diet from d 0 to 14 (P = 0.016), but not after d 14 (P > 0.05). Across sex, the antibiotic and probiotic diets increased WB incidence for those birds that did not receive a cocci challenge on d 43 (P = 0.040). Across challenge and diet treatments, males exhibited a higher BW, BWG, and GR throughout all growth phases, and males showed a higher WB incidence on d 29, 35, and 43 (P = 0.002, P < 0.0001, and P = 0.0002, respectively). In conclusion, bacitracin and Eimeria spp. increased WB incidence, BW, and GR. However, Bacillus subtilis increased WB incidence in male broilers without affecting BW and GR.
format	article
author	Linan Jia Xue Zhang Xiaofei Li Wes Schilling E. David Peebles Aaron S. Kiess Wei Zhai Li Zhang
author_facet	Linan Jia Xue Zhang Xiaofei Li Wes Schilling E. David Peebles Aaron S. Kiess Wei Zhai Li Zhang
author_sort	Linan Jia
title	Bacitracin, Bacillus subtilis, and Eimeria spp. challenge exacerbates woody breast incidence and severity in broilers
title_short	Bacitracin, Bacillus subtilis, and Eimeria spp. challenge exacerbates woody breast incidence and severity in broilers
title_full	Bacitracin, Bacillus subtilis, and Eimeria spp. challenge exacerbates woody breast incidence and severity in broilers
title_fullStr	Bacitracin, Bacillus subtilis, and Eimeria spp. challenge exacerbates woody breast incidence and severity in broilers
title_full_unstemmed	Bacitracin, Bacillus subtilis, and Eimeria spp. challenge exacerbates woody breast incidence and severity in broilers
title_sort	bacitracin, bacillus subtilis, and eimeria spp. challenge exacerbates woody breast incidence and severity in broilers
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/987be5cb52504c9395796b26d026b8ce
work_keys_str_mv	AT linanjia bacitracinbacillussubtilisandeimeriasppchallengeexacerbateswoodybreastincidenceandseverityinbroilers AT xuezhang bacitracinbacillussubtilisandeimeriasppchallengeexacerbateswoodybreastincidenceandseverityinbroilers AT xiaofeili bacitracinbacillussubtilisandeimeriasppchallengeexacerbateswoodybreastincidenceandseverityinbroilers AT wesschilling bacitracinbacillussubtilisandeimeriasppchallengeexacerbateswoodybreastincidenceandseverityinbroilers AT edavidpeebles bacitracinbacillussubtilisandeimeriasppchallengeexacerbateswoodybreastincidenceandseverityinbroilers AT aaronskiess bacitracinbacillussubtilisandeimeriasppchallengeexacerbateswoodybreastincidenceandseverityinbroilers AT weizhai bacitracinbacillussubtilisandeimeriasppchallengeexacerbateswoodybreastincidenceandseverityinbroilers AT lizhang bacitracinbacillussubtilisandeimeriasppchallengeexacerbateswoodybreastincidenceandseverityinbroilers
_version_	1718426801431117824

Bacitracin, Bacillus subtilis, and Eimeria spp. challenge exacerbates woody breast incidence and severity in broilers

Ejemplares similares